Lighting unit



Nov. 22, 1932. A. L.. MGCABE 1,888,733

A. L. MCCABE LIGHTING UNIT Nov. A2 2, 1932.

Filed AprilA 6. 1951 2 Sheets-Sheet 2 Iliff/11104;;

AT i' n RN E14;

Y Patented Nov. 22,1932 i i ',aUNITED STATES ANTHONY I.. MCCABE, orNnwToNvILLE, MASSACHUSETTS, vA'ssrciNon To EnmsoN 3.1;,

y 11,888,733* 'c Y ELECTRIC coMrANY,oFVBosToN, ,MisssAcHUsnTTsf aCORPORATION or* riflessiv CHUSETTS LTGHTING UNIT Appiicationienprii 61'931. seriaiNo'. 527,861. f

The present invention relates' to lighting units and more especiallytohospital night lights Vnow generally employed as supplementaryto themainlighting fixtures for permittingnurses and attendants to performtheirn-ight duties in relatively dim light without disturbing thepatients by the more brilliant illumination from the mainlights,

l such night lights usually being mounted iiush hinged to the front and'afscrew passing in the wall about 18 above the iioor so that i nightlights and are capable of more gen- Y the lens or transparent platecarried thereby will always have its loweredge horizontal,notwithstanding any slight inclined po-V sition of the casing madenecessary byv the aperture cut in the wall for receiving the same. Myinvention involvesfalso a door through saidV door and having threadedengagement with said front whereby said door may be securely locked inposition by turn'- ing said screw in 'one direction, orforced away fromsaid front by turning it in the opposite direction. The doorV isprovided with a rearwardly-extending frame for' receiving and supportingacontrol lens such* for eXampleas a refracting plate, or one or moresuch lenses, or a lens and a diffusion screen, or a lens and a coloredglass Ycoverplate to` soften the light, as the case may be,V togetherwith means such as screws threaded into the rearward iiange of saidframe for securing a lens, orany desired combination of lenses andplates, in fixed position in the*l The lamp Vsupport secured to the?.

frame. rear wall of the casing is made adjustable both vertically andradiallylwith respect to its point Vofattachinent to os'et the lamp fromthe focus of the lens `and thereby controlthe direction of thetransmitted light.

In the illustrative embodiment-p of my inV vention shown intheaccompanying drawp 1ngsi Figure 1 is afront unit embodying my invention;"Fig, 2. is a horizontal section taken on thel line 2-2'of. Fig.'14;"5'? Y 'Figgisa vertical sectiontaken on the i" *Y 343 OfFi'g. 1*; yy Fig.Y fiis a fragmentar'y-v sectionon an'enf largedV scale taken on4"thesame plane Fig. 153iis a fragmentary section on an 'enfl l.;

larged 'scale taken onthesame planeas Fig.2; ;5'; M Fig.V 6 is afragmentary seetion'taken onV the lineof Fig. 1.,l f* -In the`particular drawings Selectedfor more fullyl disclosing myinventiom 10is" a casing or wall box-lof pressed steel' or-fthe,

like, shown1V in"F igs. Zand 3 asheldin" aicavity formed inthe wall 11.After thelast coatV of plaster has beenfput `on the wall,`the f IfrontlQ-provided lwith an opening is mount-` ed on thek casingjby,meanswhich permit a variation inv the relative angular positions -of thecasing and front.'V

In'this particularfinstance, vsuch comprise two lugs 13- secured to thebase kof the casing nearthe front-thereof and twohV foppositely-disposed lugs 14 secured l to `the top of the casing."Aslshow'n more. clearly 4vin Fig. 4, each said lug is provided with an finwardly cupped aperture 15 Vthrough which passes a screw 16, the headof'which is lshown in the present'instance as flush with the front andjenclosed" within a"drifted"socket v17.A nut 18 having alforwardly-extending-ballshaped portion 19 i's'threaded to each screw Yandco-operates with the cup onthe lug,1th'ese" two' elementsconstituting a Vspeciesof ball y and socket joint whereby asubstantialan gular movement ofthe front and with respect tothecasingmay be effected, andsai'dvv front Y tightlvse'cured .in horizontalpos1 t1on','1 1otV s Y withstanding' any` inclinationfof the base-fof9?. y

thecasing made necessary bythe aperture in p the wall inlwhiclr saideasingv is' located.

" The door 20 is 'hinged tothe front` as shown `vatl21,21 to close theopening in .said front and is heldin closedposition bythe screwA A22 190n? es' Y kinvention thatthe light is'L utilized leyldirecitionalgcontrol,... as distinguished Y from,Y the n ,methods nowinuse which involve:absorbing4 'i "louversygorrdi-Eusionscreenslthatrthe-lightis 'l accurately Ydirectedtothe pointwhere it VWanted-,land that it is not: Wasted Yhyrr'cuttingV l 5T itoif orf.absorbing Vorf-scatteringv ity profv A 1`miscuonsly.-f .y

VifHavingthusdescribed an illustratiye em-V A Vb'odiment of'inyinvention,- 'Withmitghovvev'erVV -Y 'lmitingrnyslftliere'togf'WhatIclairnjand y vrdesire to'secu're-by.Letters Patentfis':l Tf1; lightinggun'it comprising in "combinai tion acasing, alamp-supporting bracket fdisposed i `Within` saidA casing, a front.v:forfsaidfl VVfeo o which passes througlnb-ut is not threaded to",VV

i lsaid door and is in threaded engagement With the nutV 23 ,secured tothe inner face ofV they frontby means oiv the socketEZl.Y A collar 25 1`Apreferably is interposed'r'between'the' rear face of the'- door andthe frontface of the front, 'said' collar` being placed on. said screwbutnotithreaded thereto. The slight fric-Y I' Y Vim ments V,andtliercbyiconceals Ythepsavmejfrom friew. A n* y tion between saidlcollarVandwscrew serves to.V vprevent thek ready-removal of the collar andv,-'thereby enaloles thescrew to remain inthe r door when thelatter'isOpen, this being mere-v 1y aconvenient arrangement forpreventing the lossof theV screw. The doory 2O olverlies the screwslVand itsfballiand-socket attach-v Y#Securedl to the' rarrfacefof thedoor is a .fframe k2,6 for receiving .and retaining the v transparentplatesfilenses -or the -like,-em" n 'p'loyedgin' connection VVwith=thejunit. .Inthe'f Y "present instance IV show a prismaticnplate or l,

" refraction-lens 27and a diffusion screen28 y arrangedfinfsaidframeQAslahove @stated5 it' j is quitedesirablein hospitalstojfsoftenthe.; j f lightthy means of a coloredglass Vcoverplate l, QVVsuch-as a plate of `amber glass;v The fraine,

aperture, screws passing throu h saidv front and through vsaidapertures, a .Y all-nut hay# ing threaded engagement with each offsaldscrews andtaking into the apertures insaid lugs, respectively and a doorhingedto' said front and Voverlying the headslof saidy screws.vv

hination a casing,'alampsupportingbracket In testimony whereof, I-haveheredan-subisftherefore made'sufliciently deep to accorn-rk l modateoneonly, or any desired number, oli

lensesjand pla-tes. l In orderjto secure] such l Y;` lens orcombinationovfalenses andplatesin n .fixed position, screws''),ZQthreadedthroughtheIVrearI-flange ofv theframe arefemployed,

f suchfs'crews Vpr'evassin'g v against the Vinnermost plate, asshownmost clearlyin Fig. 2.

Y Y loof `ln--ordertovary the direction lof light transmission andotherwise'controlthe same', f

.l -jr''I proyid'ev alampsupporting bracket 30 1;, .l Y. Y'

[Whichis adjustable vertically@andiradially p .With-respect.to its-pointof-attachment; f In. K 1,

'i thepresent instance jthe "vertical portion of; j c r Y I lens y' oroffset with'. respect to the same` oy turning -thebracketinrany-giyen'ijertical po;

its,

- sitnabut Said sirew aSPVOt". Y f Y n f v Vthe present c v l' Itwillbe'obvious bymeans of 2.V A lightingixture comprisingv in co1n`- ndisposed" Within'said-(basing, a vfront rornsaid f v' 'jcasin'g, a.'plurality` ofhall andsocketattachv`ments'cooperating With said casing`and said I i 'Y Q I front, whereby therelative angular position g"betweensaid casingland said rontmay loel Varied andadoorhingedrto'saidtrontand V `nferlyingsaid attachments.. iV

*scribed my 'namthis 1th der of Apriliipsi. f f

los,

